Triton: The “Odd Moon Out”

Neptune has one of the most peculiar assortments of moons in our solar system, and Triton is largely to blame. Triton is unusually massive compared to the other Neptunian satellites; but this is not the only characteristic that makes it an outlier. Not only does Triton orbit much farther away from Neptune than its other, smaller moons, it also spins in the opposite direction to the planet.